drivers: display: define DISPLAY log level

Use a common log level for display drivers.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

drivers/display/Kconfig

@@ -13,6 +13,10 @@ menuconfig DISPLAY
 
 if DISPLAY
 
+module = DISPLAY
+module-str = display
+source "subsys/logging/Kconfig.template.log_config"
+
 source "drivers/display/Kconfig.microbit"
 
 source "drivers/display/Kconfig.ili9340"

drivers/display/Kconfig.ili9340

@@ -38,20 +38,6 @@ config ILI9340_SPI_FREQ
 	help
 	Frequency to be used to communicate with the ILI9340.
 
-config LOG_ILI9340_LEVEL
-	int "ILI9340 Log level"
-	depends on LOG
-	default 0
-	range 0 4
-	help
-	Sets log level for ILI9340 display driver.
-	Levels are:
-	- 0 OFF: do not write
-	- 1 ERROR: only write LOG_ERR
-	- 2 WARNING: write LOG_WRN in addition to previous level
-	- 3 INFO: write LOG_INF in addition to previous levels
-	- 4 DEBUG: write LOG_DBG in addition to previous levels
-
 config ILI9340_RESET_GPIO_PORT_NAME
 	string "Reset GPIO controller port name"
 	default "GPIO_0"

drivers/display/display_ili9340.c

@@ -7,9 +7,9 @@
 #include "display_ili9340.h"
 #include <display.h>
 
-#define LOG_LEVEL CONFIG_LOG_ILI9340_LEVEL
+#define LOG_LEVEL CONFIG_DISPLAY_LOG_LEVEL
 #include <logging/log.h>
-LOG_MODULE_REGISTER(display);
+LOG_MODULE_REGISTER(display_ili9340);
 
 #include <gpio.h>
 #include <misc/byteorder.h>